Resetting internet connection
I was away for about a week, and on being back home I got on my notebook MAC but to find my MAC could not get to the internet! The Modem and the router were already switched on. Usually, this gave no problem. However, this time after repeated tries I was very sure something must be wrong. To cut the story short I managed to find a friend who knows another guy who is a qualified computer techy. He actually helped reset the whatever settings and upon getting it all done I asked what was the root of the problem. His explanation was "things like this does happen and we need to reset the system".
Just to make sure I will not need to bother my friend and his friend should thing like this crop up again, I really appreciate to get a guide on what you actually do to reset whatever that needs to be reset.